kottmann



Jan. 2 1934. KQTTMANN 1,94%106 TOTAL PRINTING DEVICE Filed July *19.1933 s Sheefs-Sheet 1 @lmhlmmlml mtg.

A'TTD PW EM.

Jan; 2, 1934. A. KO1I'TMANN 1,942,106

TOTAL mm navzcn Fi1ed Ju1y-19,l933 I Sheets-Sheet 2 Am'u KN EM.

Jahrz, 1934. I KOTTMANN 1,942,106

TOTAL PRINTINGJDEVICE Filed July 19; 19:53 5 Sheets-Sheet a J Ill '1 Iill "i'- ii Amrrrey Jan. 2, 193,4.v 3 KQTTMANN 1,942,106

TOTAL. PRINTING DEVICE Filed July 19, 1933 5 Sheets-Sheet 4 Jan. 2,1934- A. KOTTMANN TOTAL PRINTING DEVICE Filed July l9 1933 5Sheets-Sheet 5 co: I INVENTUFK: fl *offmgnn/ 7A'ITD F\N 5% Patented Jan.2, 1934 UNITED STATES 1,942,106 TOTAL-PRINTING DEVICE August Kottmann,Sommerda, Thuringia, Germany, assignor to Rheinisehe MetallwaarenundMaschinenfabrik, Dusseldorf-Derendorf, Germany, a corporation of GermanyApplication July 19, 1933, Serial No. 681,230, and in Germany January25, 1930 5 Claims.

The present application is a continuation in part of applicantsco-pending application, Serial No. 508,962, filed January 15, 1931. Y

Typewriting machines are known with column computing mechanism arrangedon the platen carriage wherein an automatic printing deviceautomatically prints the numerical values upon the sheet of paper on theplaten. These known automatic sum printing devices consist of stationaryfeeler devices arranged in the machine frame, which devices feel thevalue of the decimal places of the elements set on the numeral wheels inserial order and the individual feeling elements, corresponding to thedigits O'to 9, each operate one figure key of the typewriter, so that akey corresponding to a definite numerical value is operated when thefeeler element corresponding to this numerical value is actuated. Byshifting the platen carriage and the counter, in the printing of the sumtotal, the individual places of the counter mechanism are successivelybrought under the feeler devices so that the numerical values containedtherein are felt ofi consecutively and printed in proper order.

The sum printing device in accordance with the invention is intended toserve the purpose of transferring automatically, from the stationarycounters of calculating machines, the numerical values contained thereinto a sheet of paper arranged in a typewriter. Inasmuch as the countersare stationary, in accordance with the invention, the feeler devicescorresponding to the figure keys of the typewriter are arranged in aspecial carriage which is shiftable in the frame of the calculatingmachine. Upon printing the sum this carriage is shifted by a suitableswitching mechanism along the counting mechanism in the direction ofdecreasing values of the decimal place in such manner that the feelerelements are successively, and in proper order, brought into thepositions opposite to all the elements moved by the numeral wheels whichare necessary for the feeling operation.

For the feeler elements of the zero key and the spacing key there isprovided, in each decimal position of the counter, a zero printingelement which is brought into an inoperative position when the elementset by the corresponding numeral wheel indicates a numerical valuediffering from zero and which, on the other hand, actuates the feelerelement corresponding to the zero key when the corresponding settingelement indicates a zero and a higher setting element indicates a valuediiierent from zero, and acts upon the feeler element of the space keywhen the corresponding and all higher elements move-d by the numberrolls indicate a zero.

The sum printing device, in accordance with the invention, is, asalready stated, to be used in connection with a typewriter and acalculating machine.

It is to be assumed that the typewriter and the calculating machine areso interconnected that the numeral keys of the typewriter cansimultaneously operate the numeral keys of the calculating machine;however, the device connecting the keys of the typewriter and of thecalculating machine is not illustrated and described inasmuch as it doesnot belong to the sum printing device, and, therefore, it does notconstitute a part of the invention. 7

In the drawings, the sum printing device, in accordance with theinvention, is shown in combination with a typewriter which is connectedwith a calculating machine.

In said drawings:

Figure 1 is a part sectional side elevation of the calculating machine,with the parts of the printing device applied to the latter,

Fig. 2 is a plan view of,the device shown in Fig. 1,

Fig. 3 is a rear elevation corresponding to Figs. 1 and 2,

Fig. 4 is a plan view of the devices connecting the typewriter and thecalculating machine,

Fig. 4a is a plan view of a part of Fig. 4 with additional details,

Fig. 5 is a diagram of the electromagnets provided below the keys of thetypewriter and their electric connections with the contact devices ofthe calculating machine,

Fig. 6 is a detail elevation of the switching mechanism for the carriageof the feeler device of the sum printing apparatus,

Fig. 6a is a view similar to Fig. 6 showing the parts in a somewhatdifferent position,

Fig. 7 is a plan view of the carriage of the feeler apparatus itself,

Fig. 8 is a detail elevation of the drive mechanism for the elements setby the figure wheels, and

Fi 9 is a detail elevation of the return device for t e carriage of thefeeler means.

In accordance with Figs. 4 and 5, the typewriter A is connected with thecalculating machine B by electrical circuits. These circuitsare openedor clos'edby means of contact devices 23, 24 arranged-inthe calculatingmachine and controlled in accordance with the setting of the countingmechanism. When these contact devices are closed, electromagnets 25arranged in the typewriter below the figure keys 26 and below the spacekey R are energized and the corresponding keys are actuated.

The calculating machine B is made as a 10 key calculating machine with arack bar drive, wherein the figure values to be entered are set bylifting the setting pins 30 (Fig. 1) of the setting pin carriage 31. Inthe calculating operation the rack bars 5 are shifted until they abutagainst the lifted setting pins and thereby drive the figure wheels 2 ofthe counting mechanism 1 as described in the last four paragraphs of thepresent specification.

Upon printing the sum, the figure wheels 2 of the counting mechanism arefirst brought into engagement with the rack bars 5 previously locatedin' the zero position and are then set to zero, whereby the tensactuating levers 33, held stationary by the flap 32, in combination withthe cams 2a, which prepare the tens transfer, determine the zeroposition of the figure wheels. In the zero setting of the figure wheelsthe rack bars 5 are brought to a distance out of the zero position,equivalent to that by which the figure wheels are turned back in thezero setting. Over the rack bars 5 each provided with a projection 6,there lie in a carriage 20, shiftable transversely to the rack bars 5,eleven pawls 7, 7b, 70, with bars 22 arranged thereabove. The pawls 7,7b, 7c, and the bars 22 control the contact devices 23, 24 (Figs. 3, 4and 5) lying above the same and already previously mentioned, whichenergize the electromagnets 25 lying below the figure keys and the spacekey of the typewriter, and thereby move the keys.

That one of the pawls 7, which lies farthest to the right in Fig. 1operates upon the contact device 23, 24 which is connected with theelectromagnet below the figure key 1 the ones lying to the left adjacentthereto act, in order, on the contact devices which are connected withthe electromagnets of the figure keys 2 3 etc. up to 9 the pawl 7b actsupon the contact device of the space key and the pawl acts upon the zerokey.

Upon printing a sum the carriage 20 with the pawl 7, which previouslystands above the highest place of the counter, is moved over the rackbars 5 by a suitable switching mechanism that the pawls 7 with theirdownwardly directed inclined projections 7a (Fig. 3) first enter abovethe rack bar 5 corresponding to the highest place of the countermechanism, and then over the next lower one, etc. to the rack bar withthe lowest place value.

If now, for example, the number 674,231 is set up in the countingmechanism, then in the zero position of the counting mechanism that rackbar 5, which corresponds to the highest place of the counting mechanism,is shifted in correspondence with the figure 6 and the adjacent oneswhich lie to the right are shifted in correspondence with the figures 7,4, 2, 3, 1 in order, and thereby the projections 6 of the various rackbars are brought into the paths of the various pawls 7 which act uponthe contact devices and the electromagnets of the figure keys of thetypewriter.

Therefore, at'that instant wherein, due to the shifting of the carriage20, the pawls 7 with their inclined projections 7a pass above theuppermost rack bar, the pawl 7 corresponding to the figure key 6 of thetypewriter strikes the projection 6 of this rack bar, the pawl is,therefore, lifted and by means of the corresponding bar 22 closes thecorresponding contact device 23, 24 so that the corresponding magnet 25is energized and the key with the numerical value 6 in the typewriter isactuated. Then the pawls 7 in succession slip over the adjacent rackbars on the right corresponding to the number 674,231 to be transferredfrom the counting mechanism and. accordingly the figure keys 6, 7, 4, 2,3, 1 are actuated.

However, should the number 4000, that is, the

reading 004000, appear in the counting mechanism, then to the left ofthe digit four there are two zeros which should not be printed while thezeros standing to the right of the digit four must be printed. By aspecial device the suppression or the printing of these zeros is alsoaccomplished correctly.

For this purpose, a lever 9 is arranged in the calculating machinebelow. each rack bar 5. All these levers 9 are pivoted about a shaft 10stationary in the frame of the machine and are held, by springs 11, withtheir upwardly extending projections 9a against the lower surfaces ofthe rack bars 5.

To each of these levers 9 there is pivoted an angle lever 13 which isoscillatable about the pin 12. All the angle levers 13 lie with one armupon a crossbar 17 stationary in the frame of the machine and are heldby springs 15 with their other arms against the pins 16 of the levers 9.The upwardly extending arms of the angle levers 13 carry laterally benttabs 14, projecting forwardly in Fig. 1, and pins 18 projectingrearwardly (Fig. 2). The levers 13 are so arranged with respect to oneanother, and the tabs 14 and projections 18 are of such dimensions thatthe projection 18 of each lever 13 lies in front of the tabs 14 of thelever 13 of the next lower place of the machine. If now in the thousandsplace, corresponding to the number 4000, the rack bar 5 is shifted inaccordance with the commercial value 4, when the incline 8 (Fig.1) ofthis rack bar forces the lever 9 downwardly. Thereby the lever 13 whichrests with its horizontal arm upon the cross bar 17 and the upper end ofwhich in Figure 1 projects into the path of motion of the pawl 7b actingupon the space key, is moved downward so that now its upper end liesbeyond the path of motion of the pawl '71). Simultaneously the lever 13is swung to the left in Fig. 1 by means of its arm resting upon thecross bar 17. The levers 13 of the lower places are swung to the left,in a similar manner, due to the projections 18 and tabs 14 whereby theirupper ends enter into the path of the zero pawl 70. levers 13 lyingabove the thousands place, on the other hand, remain in the positionshown in Fig. 1 and, therefore, act upon the pawl 7b and the space key.If, therefore, as assumed, the numerical value 004000 is set up in thecounter, then when the carriage 20 is shifted in order to print thetotal, the space key is first actuated twice, then the numeral key 4,and thereupon the zero numeral key three times. The typewriter,therefore, writes 4000 as desired.

The switching mechanism moving the carriage 20 is controlled by the cam34 of the platen carriage 34a (Fig. 4) of the typewriter. The carriage34a of the typewriter, upon striking each key, moves to the left adistance equal to the width of a letter or figure. When the ty ewritercarriage 34a .reaches the position at which the cam 34 strikes thecounter cam 35, the said cam 35, which is adjustably secured upon astraight edge which is shiftable transversely to its longitudinal axisand is arranged parallel to the direction of movement of the typewritercarriage, is forced back. The straight edge to which the cam 35 issecured is also forced back together with the same, whereby the contactdevices 36, 37 and 37, 38 are closed. The electromagnet 38a (Figs. 4 and6) is energized by the'closing of the contacts 37, 38. Magnet 38aattracts a locking lever 39, This lever normally engages a notch The 20aof the carriage to hold said carriage 20 from movement. When the magnetis energized, the lever 39 is attracted, releasing the carriage 20 androcking the flap 32 so that it secures the tens controlling lever 33 ofthe counter, as shown in Figs. 1 and 6a. 9

Almost at the same instant at which the looking lever 39 is actuated,the magnet 40 (Fig. 4) is energized through the. contact device 36, 3'7.The magnet 40 draws the switching bar 41 (Fig. 4) downward, whereby thecontact device 43 for feeding current to the motor 42 is closed andsimultaneously the clutch 44, arranged between the motor 42 and the geardrive means 45 is engaged for one revolution.

The movement of the motor is transferred through the clutch 44, thedrive gearing 45, the shaft 55, the bevel gear 47 and the bevel gear 48to the cam 49 (Figs. 4 and 8).

The cam 49 operates upon the pin 50 of a push bar 52 guided in alongitudinal hole 51,

said push bar being pivoted at 52a to a bail 54' arranged rotatablyabout pivot 53. If the cam 49 is at rest, the rack bars 5 and the bail54 will be held in the position shown. If the cam 49 is set intorotation, the rack bars 5, responding to the pulls of the springs 4,will force the bail 54 (Fig. 8) to the left, so that the pin 50continuously remains against the cam 49. The cam is so shaped thatduring the first third of the revolution the bail 54 and the rack bars 5in Fig. 8 move to the left, until the locked tens setting levers 33(Fig. 6) in cooperation-with the tens setting projections of the'figurewheels prevent a further shifting, during the second third of therevolution a resting of the rack bars 5 in the new position takes place,and in the remaining third the push bar 52, in combination with bail 54and the rack bars 5, are again brought back to the initial position.

By the closing of the contacts 37 and 38 by means of the cam 34 securedto the platen carriageand the'counter cam 35, current will be carriednot only to the electromagnet-38a but also the electromagnets 73a and73b (Figures 4a and 6a) which are provided on lugs 72a and 72b ofmagnetic material, provided on both sides of the numeral mechanism 1.According to this structure the electromagnets 73a and 731) will pullthe numeral mechanism downwards out of engagement with the racks 5against the action of a spring, not shown, whereby the toothed wheels ofthe numeral rollers of the numeral mechanism will engage with the rackbars 5.

The cam 34 which is provided on the typewriter carriage as well as thecounter cam 35 is so dimensioned that at the instant the contact of thecams is broken the magnets 72a. and 73b will be de-energized so that thenumeral mechanism 1 will be disengaged from the toothed bars 5 by meansof springs.

Uponthe extension of the shaft 55 which carries the bevel gear 47, thereis a further cam 56 which has the purpose of producing the movements ofthe carriage, which is under the influence of the springs 61, (Figs. '7and 9), by

means of the lever 57, at the desired times. Thelever 5''! has itsfulcrum at 58 and lies with the pin 59 against the cam 56 while itsfork-like end 570. surrounds a lateral projection 60 of the carriage 20.

Upon rotation of the shaft 55 the cam 56-moves in the direction of thearrow (Fig. 9) from the position shown. The shape ,of the cam is sochosen that in the first third of the revolution the lever 57 and withit the carriage 20 remain in the position illustrated. Beginning at thesecond third the carriage 20 can move in the direction of the actingforce of springs 61 to a position determined by the shape of the cam,while in the last third of the cam revolution the lever 57 and therebythe carriage 20 are positively returned into the initial position.

When the carriage 20 has returned to the initial position, the lockinglever 39 will fall into the locking, hook 62 of the carriage '20,whereby the previously existing locking position is again restored. v

The two cams 49 and 56 accordingly operate in dependence on one another,in such manner that, as already stated, inthe first third of arevolution of the shaft 55, the rack bars 5 can become set, while thepawl carriage 20 still remains in the position of rest. In the secondthird In order to be able to make the switching arplaten carriage 340.,a second cam 35a (Fig. 4)

is used, which is so shaped that it is forced back by the cam 34 of thetypewriter carriage 34a. only as far as is necessary to close thecontacts 36, 37. The contacts 3'7, 38, therefore, are not closed by thissecond counter-cam. Conseouently, only the magnet 40 is energized, sothat also solely the switching bar 41 is moved. The motor is thusprovided with current and the cams 49, 56 are turned, while, on thecontrary, the locking lever 39 which secures the carriage 20 is notdisengaged, because the magnet 38 is not energized. The feeler device,therefore, is not set into action and an automatic printing of the sumdoes not take place.

A contact device 66, 6'7 which is moved by the carriage 20 through thebar 65, prevents a secriage 20 into the position of rest, therefore, no

current closures are produced, even though the pawls '7 are lifted fromthe projections 6 and the contacts 23, 24 are closed. I

Shortly before the carriage 20 again reaches jection 65a. of the bar 65;this is carried along and again closes the previously opened contacts66, 67 so that upon renewed moving of the pawl carriage 20 the sumprinting device again becomes operative.

the initial position, its offset 69 meets the pro- The bar 65 isshiftable, by means of longitudinal holes 71, on stationary pins '70 inthe frame of the machine and is held by the pawl 68 in one or the otherend position.

As already stated hereinbefore, the rack bars 15( 5 then the contactdevice 36, 37 is closed, but not the contact device 37', 38. Therefore,the motor 42 is connected in circuit, but the carriage 28 of the totalprinting device remains locked, so that-no printing of the total'takesplace. The motor 42 turns the cam disc 49. During the first third ofeach rotation of the cam disc 49 the rack bars 5 (by virtue of thesprings 4) follow the .bail 54, until the ends of the rack bars strikeagainst the setting pins which have been raised in correspondence withthe present number. In the second third of the rotation, during whichthe.

- rack bars 5 meat rest. the register mechanism is then brought intoengagement with the rack bars. bars 5 are returned to the initialposition, whereby the flgure wheels 2 brought into mesh therewith areturned in correspondence with the preset number. As soon as the rackbars have reached the initial position the register mechanism isdisengaged therefrom.

The meshing and non-meshing of the numeral mechanism 1 with the rack.bars 5 is carried out during the calculations by acam 49 (Figure 8)mounted on the shaft, that is, by the camdisc 80 (Figure 4a) of the cam49 with the raised sur-- face 80a which constitute approximatelyonethird ofthe circumference of the cam disc. The

surface 80a is adapted to operate two contact tive. When the machine isstanding still the cam disc 80a is in the position shown in Figure 4aand this disc rotates during the operation of the machine in thedi'rectionof the arrow. The cam surface 80a, therefore, closes thecontact arrange-. ment 82 during the last third of a period of completerevolution of the cam disc'80 and the cam 49. The magnets 72a and 12bare, therefore,

- energized during every last third revolution of the 7 whereas in thesecond case they-willbesubtracted.

If a plurality of rotations be imparted to the cam disc 49, then thenumber pre-set into the setting pins 30 will be transferred a pluralityof times into the register mechanism, as is necessary inmultiplications. -The setting pin carriage 31 may be shifted by strikingthe zero key. Therefore, the number pre-set into the setting pins may betransferred to any desired places of the register mechanism by shiftingthe setting pin carria e.

The above described rack bar drive docs not constitute a part of theinvention. This drive mechanism is described here solely to show how Inthe last third of the rotation the rackthe device, in accordance withthe invention. cooperates with the remaining parts of the calculatvingmachine.

It is immaterial, as far as the invention is coneerned, whether theelements'of the total printing device which are pre-set by the figurewheels are formed as rack bars or as gear segments or as any othersettable elements; it is also not necessary that the elements of thetotal printing mechanism which 'are set by the figure wheels shouldsimultaneously form a portion of the register drive means. Theconstruction of the register drive means is immaterial as far as theinvention is concerned.

I claim as my invention:- I

1. A totalv printing device for the automatic transferring of numericalvalues from the stationary counter mechanism of a calculating ma chineto a sheet arranged in a typewriter, comprising a series of racks. afeelcr device having a series of vfeelerelements corresponding to thedigits 0-9, and a space key which cooperates with the said racks, whichin turn cooperate with the respective number wheels of the calculatingmachine; a carriage carrying said elements, said carriage being arrangedto move across the mechanism of the calculating machine to cause thefeelers to be actuated successively by the counter mechanism in thesuccessive decimal places; and means for transmitting the resultant'actuations to the typewriter to operate the corresponding keys thereof.

2. A total printing device in accordance with claim 1, wherein there isprovided, for each decimalplace of the counting mechanism, a zeroprinting control element, said element being adapted to actuate eitherthe space key or the zero key of the typewriter.

3. A total printing device in accordance with claim 1, wherein an anglelever is provided in w th decimal place of the counting mechanism tocontrol the omission of the printing of the zero,

one end of each of said levers projecting into the path of the feelerwhich corresponds to the space key of the typewriter.

4. A total printing device in accordance with claim '1, wherein an anglelever is provided in each decimal placefof the counting mechanism tocontrol the omission of the printing of' the zero, one end of each ofsaid levers projecting into the path of the feeler which corresponds tothe space key of the typewriter, and wherein each 5 of said levers isJournaled on a second angle lever which is so shifted by means of thecorresponding rack as soon as the corresponding number wheel leaves thezero position that the angle lever iournaled thereto becomesinoperative.

5. An automatic total printing device in accordance with claim 1,wherein an-ang 1 e lever is provided in each decimal place of thecounting mechanism to control the omission of the printing of the zero.one end of each of said levers projecting into the path of the feclerwhich corresponds to the space key of the typewriter and wherein each ofsaid levers is iournaled in a second angle lever which is so shifted bymeans of the corresponding rack as soon as the corresponding numberwheel leaves the zero position that the angle lever journaled theretobecomes inoperative, said last-named angle lever having one of its armslying against a stationary projection

